High pressure cooling

High pressure coolant delivery (to 170 Bar) has benefits in terms of metal cutting efficiency. Wanner says it can offer reductions in cycle time of up to 70% while improving the quality of surface finish, extending the life of tooling and inserts, and enhancing chip control.

Machining produces fines as well as chips which, if not removed by ultra-fine filtration, will eventually destroy any pump where bearings and seals are exposed to the pumped coolant.

Hydra-Cell hydraulically balanced diaphragm pumps are designed to handle fines over 500mµ in diameter, removing the need for expensive fine filtration.

Wanner says that should a filter become blocked, screw and gear pumps will tend to overheat as they need the pumped fluid for sealing, internal lubrication and cooling, whereas Hydra-Cell pumps will continue to operate without damage.